Expanding reamer



(No Model.)

P. J. CLEVER.

EXPANDING BEAMER.

Patented Jan. 22, 1895.

ftlrvrrao rares lF/ER J. ("LEYIR, OF BRUNS\VICK, MISSOURI.

ExPANolNe Ria/uvnnf SfPFtCTFTCATION forming part of Letters Patent No. 532,765, dated January 22, 1895.

Application filed October B, 1894:. Serial No. 525,22?. 'NO model.) I

.To all 'whom it may concern:

lle it'known that I, PETER J. CLEVER, a citizen of the United States, residing at Brunsv wick, in the county of Ohariton and State of Missouri, have invented certain new and useful Improvements in Expanding Reamers; and I do hereby declare that the following is- 'a full, clear, and exact description'of the saine, reference being had -to the annexed drawings, making a part of this specification, and to the lettersof reference marked thereon.

'lhe present invention has for its object to provide an expanding reainer for the use of machine and gun workers for the purpose of enlarging holes'in metal, a'nd without the neccssily of adding to or changing of parts, also for the purpose of cutting counter-sinks for various purposes and for all other uses to which a tool of this character may be found of value.

'lhc invention consists in a tool of the above character that will possess strength and durability and be effective in its operation, and

capable of adjustment to any degree of fine-- ness to adapt the tool to various kinds of work or size of hole required, as will be here" inafter described and subsequently pointed out in the claims.

Figure l of the drawings is a perspective view of an expanding reamer constructed in. accordance with my invention; Fig. 2, an elevation thereof partly in section; Fig. 3, a perspective View in detail vof the adjusting deviceand one of the radial cutters; Fig. 4, a horizontal section of the reamer taken on line fr a' of Fig. 2.

In the accompanying drawings A rpresents the hollow arbor or body of thelrearner having at its lower end the longitudinal slots a to receive the cutters B. rlhese cutters have grooved seats b to receive a flat circular spring C to retain the cutters in relative position in the slot-s and admit of the cutters being forced outwardly by means of the adjusting device D. f

The device D is tapering and has Ilat sides,

-c to more effectnally bear against the inner edges of the cutters and thereby act withv increased effectiveness in forcing them outward.

are beveled as shown at d to enable them to come in contact with the smaller end of the adjusting device, the tapering of the device rendering the beveling of the corners of the cutters necessary. The longer the taper of the device in proportion to the length of the cutters the greater will be the variety and capacity thereof.

. The lower end of the adjusting ydeviceD has a guide E which is of such diameter asto nicely fit within the hollowarbor or body A,

and the opposite end of the device has a screw threaded shank F in which is formed a longitudinal groove e, and engaging with this groove is a pin f which is to prevent the device l) from tui-ningen its axis when moved longitudinally. l l

'lhe adjusting device is moved lengthwise or longitudinally of the arbor orbody of the tool 'oy means of a tubular feeder Gr which has interior screw threads to engagewith the threads on the shank` F.

The feeder G is suitably swiveled tothe end of -thc hollow body or arbor A as shownatg, so as to retain lthe feeder in place,l)ut 'admit of its freely rotating to draw in er force-out the adjusting device D. v n

'lhe end of the feeder G has a flat sided projection 7i whereby the feeder may betnrned by a wrench or other .toolw--MfV Sie said cutters, consisting of an adjusting device of tapering form and provided with a guide at one end and a screw shank at the opposite end, and a feeder consisting of a tube having screw threads upon its interior which engage the screw threaded shank, said feeder being swiveled to the hollowbody or arbor,sub,

stantially as and forthe purpose described.

An expanding reamer, consisting of a hol- IOC,

low body or-arbor, cutters located in slots in In testimony that I claim the above I have said body or arbor, a, spring encircling the hereunto subscribed myrnamein the presence 1o gutters, a tapering ajustin; devie theretflor of two witnesses. Y avlng upon one en a gul e an upon e 5 opposite end a. screw shank, and a. lrotatable PETER CLEVER tubular feeder having interior screw threads Witnesses: with which the shank engages, substantially GEO. KENNEDY,

as and for the purpose set forth. A G. D. KENNEDV 

